"Another You" has a lot going for it, but is ultimately made mediocre by its flawed writing.
To me, the film is a dark coming-of-age movie. I'll start with the things it does well. It effectively draws on both the pain of failed relationships and the anxiety college age young people feel having to face the complex real world for the first time.
The acting was solid all-round. Ksenia Solo, of whom I'm a big fan, does an excellent job portraying Sydney's pain and frustration. Diego Boneta and Richard T. Jones competently fill out their roles as well.
Visually, the film is unremarkable but avoids being bad. The score, however, is occasionally a little distracting.
The bad of the movie is its writing. Sydney should be a character we emphasize with, as her struggles are similar ones most people have dealt with to some degree. But the writers fail to make her very likable, often seeming more pathetic than anything else. This could serve to erode audience interest in her story, even if she is well- portrayed. A pretty big thing considering that is what the whole movie is about. She is also apparently something of a genius, but we don't see her do much that is very smart, except in a brief moment where she explains some science.
It was the ending that really drags down the film, however. The writers chose to make it an ambiguous ending which I felt didn't let Sydney come full circle as a character. This was disappointing after watching a whole movie about her.
To summarize, the film is not awful but is not especially good either. If you have 90 minutes to kill and want to watch something dramatic, there are worse films to see. If your expectations are not too high, it'll do the job. This is not a movie that you plan an evening around to see though; it is not a movie that will have you deeply invested or have you thinking about it hours later either. 6/10.